Shareholders' Equity - Information on Outstanding Expired Warrants (Detail) |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
$ / shares
shares
| |
| Class of Warrant or Right [Line Items] | |
| Weighted Average Exercise Price | $ / shares | $ 11.55 |
| Warrants | shares | 1,124,182 |
| Warrant 1 [Member] | |
| Class of Warrant or Right [Line Items] | |
| Weighted Average Exercise Price | $ / shares | $ 10.80 |
| Warrants | shares | 502,907 |
| Expiration Date | Jul. 02, 2015 |
| Warrant 2 [Member] | |
| Class of Warrant or Right [Line Items] | |
| Weighted Average Exercise Price | $ / shares | $ 12.16 |
| Warrants | shares | 621,275 |
| Expiration Date | Apr. 30, 2015 |